139258988 has 24 divisors (see below), whose sum is σ = 269230080. Its totient is φ = 62496720.

The previous prime is 139258981. The next prime is 139258991. The reversal of 139258988 is 889852931.

It is not an unprimeable number, because it can be changed into a prime (139258981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16556 + ... + 23507.

It is an arithmetic number, because the mean of its divisors is an integer number (11217920).

Almost surely, 2^139258988 is an apocalyptic number.

It is an amenable number.

139258988 is a deficient number, since it is larger than the sum of its proper divisors (129971092).

139258988 is a wasteful number, since it uses less digits than its factorization.

139258988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40157 (or 40155 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 53.

The square root of 139258988 is about 11800.8045488433. The cubic root of 139258988 is about 518.3316699411.

The spelling of 139258988 in words is "one hundred thirty-nine million, two hundred fifty-eight thousand, nine hundred eighty-eight".